I have a DX6R with the latest software and castle telemetry link does not work with it unfortunately. The DX6R uses raceware. The castle telemetry link only works with spektrum's airware products. It's a bit frustrating and I've called castle about it, they said they are waiting/hoping spektrum will release some kind of communication code/protocol to them so they make it work like they did with airware. The castle telemetry link for futaba does work with the 7PX. Something I wish I knew prior to buying the DX6R. If you go on castle's site they have a compatibility chart for spektrum and futaba.